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Anther and microspore culture Suggested reading: Vasil ch. 7, Bhojwani ch. 7 Importance of anther/microspore culture completely homozygous inbred lines
lec05.423.07.ppt - Search
anther
culture
suggested
vasil
bhojwani
importance
completely
homozygous
inbred
Stage of development of microspore or pollen development; Microspore or pollen must shift from gametic to sporophytic pattern of development
... germinate into a male gametophyte Pine Ovule sits on top of a cone scale and is a mix of sporophytic and gametophytic tissues Pollen (microspore) lands on ...
EvolutionOfSeedPltsCyGinCon.ppt - Search
germinate
gametophyte
ovule
scale
sporophytic
gametophytic
tissues
pollen
lands
... 2n = 2X = 14 Hordeum bulbosum Wild relative 2n = 2X = 14 Haploid Barley 2n = X = 7 H. Bulbosum chromosomes eliminated X Embryo Rescue ↓ Features of Anther/Microspore ...
Later: Microspore cultures. Occur spontaneously in inter-specific cross or induced by. irradiating pollen prior to pollination. Extremely poor efficiency.
lecture01_11.ppt - Search
occur
spontaneously
inter-specific
cross
induced
irradiating
prior
extremely
Lets new embryo “eat” its mother (megagametophyte): keeps energy used to make megagametophyte from being wasted; 4) Microspore: disperse it through ...
Lecture 24 Controversial transgenic plants: risks revisited Chapter 15 Neal Stewart The Frankenstein paradigm: man controls (perverts) nature with science.
Lecture 24 Controversies.ppt - Search
lecture
controversial
transgenic
risks
revisited
chapter
stewart
frankenstein
controls
nature
Each microsporangium contains micro- sporocytes (microspore mother cells) that divide by meiosis, producing microspores. 1 Microspores form pollen grains ...
Anther and microspore culture Production of haploid plants Production of homozygous diploid lines through chromosome doubling, thus reducing the time required to ...
Tissue-culture.ppt - Search
production
haploid
plants
diploid
lines
through
chromosome
reducing
required
Parts of a Flower Sperm Formation Anther contains the microsporangia Microsporangia (2N) creates 4 haploid microspores by meiosis Each microspore will undergo mitosis ...
- Seeds - Gymnosperms & Angiosperms Gymnosperm Life Cycle Heterosporous – Microspore and Megaspore (microspore in male cone and becomes male gametophyte, megaspore in ...
PlantDivNew_29.ppt - Search
seeds
gymnosperms
angiosperms
gymnosperm
cycle
heterosporous
megaspore
becomes
Plant Tissue Culture Maheswari, 1960 first anther culture Nitsch, 1974 microspore culture Cocking, 1960 Protoplast culture ...
... Barley 2n = 2X = 14 Hordeum bulbosum Wild relative 2n = 2X = 14 Haploid Barley 2n = X = 7 H. Bulbosum chromosomes eliminated X Embryo Rescue ↓ Anther/Microspore ...
TissuCulturebiotech20061.ppt - Search
barley
hordeum
bulbosum
relative
chromosomes
eliminated
embryo
rescue
Microspore (n) Male gametophyte (in pollen grain) (n) Mature flower on sporophyte plant (2n) Haploid (n) Diploid (2n) MEIOSIS . Ovule (2n) Ovary
... microspore (1n) microgametophyte germination (mitosis) - the microgametophyte is very small and enclosed in cell wall of a single microspore = a ...
RNAse production leads to precocious degeneration of tapetum cells, the arrest of microspore development and male sterility. It is a dominant nuclear encoded or ...
... Zea mays Stamen - Male Produce diploid microspore mother cells Each mother cell undergoes meiosis to produce 4 haploid microspores Each haploid microspore develops into ...
Has own food supply Protective coat against harsh conditions Some are designed for travel to new areas Sporophytes produce: MICROSPORE Produce male gametophyte Produce ...
... Plants true roots, stems, and leaves vascular tissue xylem phloem lignin sporophyte is the dominant phase Life Cycle homosporous heterosporous megaspore microspore ...
Produce diploid microspore mother cells 2. Each mother cell undergoes meiosis to produce 4 haploid microspores 3.
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